Abstract: A radar device has a long range radar sensor having a first transmission and receiving section for transmitting and receiving radio wave to a first detection range and a first signal processing section for detecting an object existing in the first detection range; a short range radar sensor having a second transmission and receiving section for transmitting and receiving a radio wave to a second detection range of which width is wider and of which distance is shorter than the first detection range and a second signal processing section for detecting an object existing in the second detection range; and a processing section for integrating information supplied from the first and second signal processing sections. And one of the long range radar sensor and the short range radar sensor stops a detection operation of the object to an overlapped range of both the detection ranges.

Abstract: A transmission side is provided with a power control signal generation section 2 for generating a power control signal whose amplitude is variable in order to equalize a signal intensity of a received signal, and an amplification section 4 for controlling transmission power of a transmission signal of a pulse train, by controlling a gain according to the amplitude of the power control signal.

Abstract: A system and method are described for generating waveforms for use in radar and sonar systems. The system includes waveform generation circuitry a waveform generator and an up-conversion module. The waveform generator generates concatenated pulse waveforms at an IF band. In a given pulse repetition interval (PRI), the concatenated pulse waveforms comprise a first and second pulse types associated with first and second IF frequencies respectively. The up-conversion module up-converts the concatenated pulse waveforms to an RF band to form first and second sets of pulses. In the given PRI, each pulse is up-converted to a different RF frequency, pulses of different lengths are associated with a similar carrier frequency, and at least one pulse from each of the sets of pulses implements frequency diversity.

Abstract: There is disclosed an object locator system for obtaining information about the location of an individual, animal or moveable object, having a lightweight, attached object locator, that is present in a region served by a two-way paging system and a global positioning satellite system. The object locator may be selectively activated to conserve power or enabled to respond only when beyond a boundary.

Abstract: A device is dedicated to generating messages relating to at least one satellite navigation system and to be sent to navigation receivers. This device comprises processor means responsible for generating “description” messages to be broadcast to the navigation receivers from a chosen date and comprising a description of a format of future messages to be broadcast to the navigation receivers from a date after the chosen date.

Abstract: An apparatus for generating a device address of a wireless local network includes an alien beacon determination unit which determines whether a received beacon is an alien beacon; a zone identity management unit which compares an alien zone identity included in the received beacon with a zone identity of a corresponding device if the received beacon is the alien beacon, and regenerates the zone identity of the corresponding device if the alien zone identity is identical to the zone identity of the corresponding device; and a device address generation unit which regenerates a device address of the corresponding device if a device address of an alien beacon group is identical to the device address of the corresponding device.

Abstract: A Ubiquitous Sensor Network (USN) system using multi-channel having differential radio power and a method of configuring the USN system are provided. The USN system and the method include a sink node performing a communication with a sensor node using at least one or more frequency signal having differential outputs; and a sensor node performing the communication with the sink node using the at least one or more frequency signal. The USN system and the method simultaneously use a control frequency signal having a high output power and a data frequency signal having an output power lower than that of the control frequency signal, thereby reducing a beacon transmission delay, enabling time synchronization between the sensor nodes, and preventing collisions between beacons due to beacon relays among the sensor nodes, so as to configure a more efficient sensor field.

Abstract: A system and a method for position determination by impulse radio using a first transceiver having a first clock providing a first reference signal and a second transceiver placed spaced from the first transceiver. The system determines the position of the second transceiver. The second transceiver has a second clock that provides a second reference signal. A first sequence of pulses are transmitted from the first transceiver. The first sequence of pulses are then received at the second transceiver and the second transceiver is then synchronized with the first sequence of pulses. A second sequence of pulses are transmitted from the second transceiver. The first transceiver receives the second sequence of pulses and the first transceiver is synchronized with the second sequence of pulses. A delayed first reference signal is generated in response to the synchronization with the second sequence of pulses.

Abstract: An apparatus includes a number of electrically conductive spaced apart elements, and a ground plane situated at least partially in a space between at least two of the electrically conductive spaced apart elements. The apparatus further includes one or more wire media situated over at least a portion of and coupled to the ground plane, the one or more wire media situated at least partially in the space between the at least two electrically conductive spaced apart elements. Radiating elements may be used as the electrically conductive spaced apart elements to create an antenna. Such an antenna and apparatus may also include a conductive mesh, connecting tips of the pins (also called “wires”) of the wire medium. The wire medium and the conductive mesh can reduce coupling between the electrically conductive spaced apart elements (e.g., radiating elements). The apparatus can be formed at least in part in a semiconductor.

Abstract: A multi-frequency antenna for receiving a first frequency and second frequency signals comprises a grounding element, a first conductive member, a first radiation member, and a second radiation member. The first conductive member connects to the grounding element. The first radiation member and the second radiation member connect to the first conductive member separately. The multi-frequency antenna further comprises a parasitic structure. The parasitic structure structurally encircles the second radiation member and the encirclement is a partial encirclement. Moreover, the parasitic structure connects to the grounding element.

Abstract: An antenna device suitable for short distance wireless communication is provided which can have a good symmetry of directional characteristics and increase a gain at both end sides in a longitudinal direction of a ground pattern. An antenna device is formed by patterning a metal conductor on a printed substrate. The antenna device is provided with a ground pattern of a rectangular shape, a power feed element arranged adjacent to one short side portion of the ground pattern, a correction pattern that projects from the short side portion and is located lateral to the power feed element, and a parasitic radiation element extending along the short side portion at a separation position facing the short side portion of the ground pattern through the power feed element and the correction pattern. An electrical length of the parasitic radiation element is set to be approximately ½ of a resonant length. When power is feed, the power feed element is excited to radiate electric waves.

Abstract: An antenna array has a ground plane, a plurality of spacers, a radiating patch array and a feeding member. The spacers are mounted on the ground plane. The radiating patch array is mounted on the spacers, is separated from the ground plane at an interval and has three pairs of radiating patches. Each radiating patch is parallel to the ground plane and has a sub radiating patch formed on and inclined away from the ground plane. The inclined sub radiating patches and the interval increase gain of the antenna array.

Abstract: An embodiment of the present invention provides an apparatus, comprising a wireless handset and an antenna tuner within the wireless handset that is adapted to preset its impedance to the transmit/receive circuitry in the handset.

Abstract: A system and method for a wireless link to a remote receiver includes a communication device for generating RF and a planar antenna apparatus for transmitting the RF. The planar antenna apparatus includes selectable antenna elements, each of which has gain and a directional radiation pattern. The directional radiation pattern is substantially in the plane of the antenna apparatus. Switching different antenna elements results in a configurable radiation pattern. Alternatively, selecting all or substantially all elements results in an omnidirectional radiation pattern. One or more directors and/or one or more reflectors may be included to constrict the directional radiation pattern. The antenna apparatus may be conformally mounted to a housing containing the communication device and the antenna apparatus.

Abstract: Improved electrical connector apparatus including a wireless antenna acting as a transceiver in conjunction with a wireless integrated circuit is disclosed. In one embodiment, the modular connector comprises an RJ45 modular jack, and the wireless transceiver comprises a Bluetooth transceiver transmitting via an integrated antenna disposed on the front face of the Faraday shield at least partly surrounding the modular connector. In another embodiment, an 802.11 transceiver is used. In yet another embodiment, an ultra-wideband (UWB) interface is used.

Abstract: A choke ring apparatus for attenuation of electromagnetic waves in a mobile platform fuselage includes a ground plane mounted on a surface of the fuselage. The choke ring has an axial circular window and a series of concentric circular ring segments on the ground plane arranged coaxially about the axis of the window. The circular ring segments extend from the ground plane. The ring segments defining at least one groove therebetween. The ring segments have a flat ridge at the edge, and each groove has a depth defined by a pair of adjacent ring segments. The width of the flat ridge surfaces and a width of the groove between adjacent ring segments are approximately equal. The depth of the groove is determined based on a predetermined resonant frequency, such that the choke ring apparatus selectively attenuates electromagnetic waves in a region of the resonant frequency when propagating through the window.

Abstract: A mobile radar array system comprising a towable platform having a pair of wheels operably coupled thereto, the wheels adapted for rolling along a road surface; and an antenna array mounted on a side of at least one of the wheels, the antenna array, when energized, capable of providing a radiation pattern for detecting a moving object.

Abstract: There are provided systems and methods for adjusting the tilt of a radar cover in response to change of weather condition by calculating dielectric constant of external air, optimum thickness of radar cover, and then optimum tilt angle of radar cover, and adjusting the position of the radar cover.

Abstract: The multiple polarization loop antenna includes a circularly polarized loop antenna, which may utilize a loop electrical conductor and two signal feedpoints along the loop electrical conductor separated by one quarter of the length of the loop circumference for a signal feedpoint phase angle input difference of 90 degrees. Each of the signal feedpoints may include a loop discontinuity, so that at least one signal source coupled thereto provides circular polarization from the loop electrical conductor. The circularly polarized loop antenna provides an increase in gain and decrease in size relative to the dipole turnstile. It can provide two orthogonal polarizations from two isolated ports, and the polarizations may be dual linear or dual circular.

Abstract: The polarization-diverse antenna array includes three orthogonal loop antennas having a common center, e.g. together defining a sphere. Each loop antenna includes a loop electrical conductor. Two signal feedpoints are along the loop electrical conductor and separated by a fraction of a length of the loop electrical conductor. Each of the signal feedpoints includes a series signal feedpoint so that a polarization diversity controller coupled thereto may selectively provide vertical, horizontal, lefthand circular and righthand circular polarization for a single loop electrical conductor, including simultaneous (dual) polarizations. These signal feedpoints may supply signals with vertical, horizontal, lefthand circular and righthand circular polarization from each of the three orthogonal look-angles provided by the three loop electrical conductors.

Abstract: A method for positioning a dielectric dome covered satellite dish adapted to be connected to a satellite receiver, by inputting an elevation command into a control console corresponding to a geographic location of the satellite dish and then depressing a single key on the control console to activate an azimuth drive system on the satellite dish. The operator depresses any key on the console to stop azimuth rotation of the satellite dish upon viewing a satellite signal. The satellite signal is fine tuned by appropriately depressing the right arrow key, a left arrow key, an up arrow key, or a down arrow key to effect pointing of the satellite dish.

Abstract: An antenna (10) having a top (14), a bottom (16), and a longitudinal axis (20). An outer shell (12) of electrically conductive material is provided which is coaxial with the longitudinal axis, and which includes an outer top wall (22) joining with an outer side wall (24) that extends toward the bottom of the antenna. The shell defines an interior region (18) that is filled with a dielectric material, and the shell has at least one slot (30) with opposed slot ends. Each slot extends from one opposed slot end in the side wall, and at least partially across the top wall to an opposed other slot end. A coaxial feed (32) extends from the bottom of the antenna to the top of the antenna, to convey electromagnetic energy to or from the top wall of the antenna.

Abstract: An antenna (10) having outer and inner sections (12, 14) of electrically conductive material and coaxial with a longitudinal axis (19). The outer section includes an outer side wall (22) extending from the bottom to join an outer top wall at the top of the antenna. The inner section includes an inner side wall extending upward from the bottom to join an inner top wall. The outer and inner sections define an interior region (32) filled with dielectric material. The outer section has at least one slotted opening (34) with opposed ends, wherein each such slotted opening extends from one end in the outer side wall, across the outer top wall, and to the opposed end in the outer side wall. The inner section including at least one feed (36) to convey electromagnetic energy into or out of said interior region of the antenna.

Abstract: A system and method for a wireless link to a remote receiver includes a communication device for generating RF and an antenna apparatus for transmitting the RF. The antenna apparatus comprises a plurality of substantially coplanar modified dipoles. Each modified dipole provides gain with respect to isotropic and a horizontally polarized directional radiation pattern. Further, each modified dipole has one or more loading structures configured to decrease the footprint (i.e., the physical dimension) of the modified dipole and minimize the size of the antenna apparatus. The modified dipoles may be electrically switched to result in various radiation patterns. With multiple of the plurality of modified dipoles active, the antenna apparatus may form an omnidirectional horizontally polarized radiation pattern. One or more directors may be included to concentrate the radiation pattern. The antenna apparatus may be conformally mounted to a housing containing the communication device and the antenna apparatus.

Abstract: An antenna has a ground plane, a radiating member, a signal-feeding member and two grounding supports. The radiating member is suspended over and separated from the ground plane and has two opposite non-radiating edges. Each non-radiating edge has a middle section. Each grounding support is connected perpendicularly to the middle section of one non-radiating edge of the radiating member and the ground plane. The grounding supports connected between the radiating member and the ground plane excellently improve the combination of the radiating member and the ground plane to prevent the antenna from inadvertently disassembling.

Abstract: An apparatus is disclosed for a communication device (100) with a wideband antenna (102) supporting at least two common and one differential resonant modes. An apparatus that incorporates teachings of the present invention may include, for example, the communication device having an antenna (102) that includes a ground structure (202), a first elongated conductor (204) spaced from the ground structure, a second elongated conductor (206) separated from the first elongated conductor, third and fourth conductors (212) each coupled to the first and second elongated conductors forming a gap (205), a ground conductor (208) coupling the ground structure to one among the first and second elongated conductors, and a signal feed conductor (210) coupling to one among the first and second elongated conductors spaced from the ground conductor. Additional embodiments are disclosed. A ?10 dB bandwidth of at least 0.5 can be realized using electrical non-congruence.

Abstract: An embodiment of the present invention relates to impedance matching applied to a radio apparatus having an antenna. The antenna transmits and receives a signal of a predetermined frequency band. A high-frequency signal processing unit performs a signal processing on the signal transmitted from and received by the antenna. The signal path connects the antenna with the high-frequency processing unit. The signal path is structured in a manner such that, at one point between the antenna and the high-frequency signal processing unit, the signal path is branched out to a plurality of branched line paths that each include at least an inductance component and a capacitance component and, at another point between them, the respective branched-out branched line paths are gathered. By adjusting the number of a plurality of branched line paths, the impedance is matched in the predetermined frequency band.

Abstract: The present invention relates to an antenna matching device that varies a frequency bandwidth according to mobile communication services, and to a transceiver having the same. To this end, an exemplary embodiment of the present invention provides a transceiver that varies a frequency band and a bandwidth according to required services in a mobile communication system, the transceiver including an antenna matching controller that generates a prescribed switch control signal according to a service requested by a user, an antenna variable matching unit that variably forms a matching circuit according to the switch control signal to be transmitted from the antenna matching controller and varies the frequency band and the bandwidth, an analog processing unit that processes a signal to be transmitted/received through the antenna variable matching unit, and a wideband antenna that transmits/receives a radio frequency according to the frequency band and the bandwidth set by the antenna variable matching unit.

Abstract: An antenna comprising a radiating element for transmitting and receiving communication signals is disclosed. A load and a feed are connectable to the radiating element and that the feed is spaced apart from the load. The radiating element is a planar loop having two free ends to which the load and the feed are connected. The load has two distal terminals, one of which is connected to one of the two free ends and the other is provided for connecting to one of grounding and another radiating element.

Abstract: According to one embodiment of the invention, a radome cover for an RF sensor has been provided. The radome cover comprises a ceramic core and at least two layers. The ceramic core is sandwiched between the at least two layers and the at least two layers are impedance matched to the ceramic core. The radome cover provides ballistic protection for the RF sensor.

Abstract: Method and structure for a microwave antenna module is provided. The method includes, creating a laminate structure by laminating a plurality of conductive layers and dielectric layers; creating a plurality of layers within the laminate structure to interconnect the plurality of conductive layers and dielectric layers; laminating a base plate to a bottom of the laminate structure; wherein the baseplate operates as a heat sink; and laminating a seal ring to a top periphery of the laminate structure.

Abstract: Disclosed is a modular antenna panel including an antenna wire disposed in a panel substrate, and also including one or more electrical connectors and one or more mechanical connectors disposed at one or more edges of the modular antenna panel. The electrical connectors are configured for electrical connectivity with adjacent modular antenna panels and the mechanical connectors are configured to enable mechanical connections with adjacent modular antenna panels. Two or more modular antenna panels can be arranged to form an antenna assembly for a radio frequency identification system. Adjacent modular antenna panels are electrically connected to one another by engaging one or more of the electrical connectors disposed at one or more edges of the adjacent modular antenna panels, and are mechanically connected to one another by engaging one or more of the mechanical connectors disposed at one or more edges of the adjacent modular antenna panels.

Abstract: An antenna arrangement for a Multiple Input Multiple Output (MIMO) radio system, the antenna arrangement transmitting and receiving in three essentially uncorrelated polarizations. The arrangement includes three parallel, stacked patches separated by first and second slots. A first feeding line feeds the first patch, and at least a second and third feeding line feed the second patch. In a first operating mode, the first feeding line generates a first constant E-field in the first slot between the edges of the first and second patches. In a second operating mode, the second feeding line contributes to a second, sinusoidally varying E-field in the second slot between the edges of the second and third patches. In a third operating mode, the third feeding line contributes to a third, sinusoidally varying E-field in the second slot between the edges of the second and third patches.

Abstract: A method for partitioning a plurality of antennas in a wireless communication system, in which the antennas are grouped into a first set of partitions and a second set of partitions. One or more signal transmission schemes are performed with the antennas grouped into the first set of partitions for a first time period, and then with the antennas grouped into the second set of partitions for a second time period.

Abstract: A multiple-antenna device is provided, comprising: a printed circuit board having a ground plane configured to provide electromagnetic isolation between a first side of the printed circuit board and a second side of the printed circuit board; a first non-conductive support member formed over the first side of the printed circuit board; a second non-conductive support member formed over the second side of the printed circuit board; a first antenna formed over the first non-conductive support member; and a second antenna formed over the second non-conductive support member, wherein the first antenna is electrically connected to a first feed point on a first portion of the printed circuit board that is not connected to the ground plane, and wherein the second antenna is electrically connected to a second feed point on a second portion of the printed circuit board that is not connected to the ground plane.

Abstract: An attached protective cover of a USB device, a USB device and a method of wirelessly transmitting data. In one embodiment, the attached protective cover of a USB device includes a cap with an associated antenna and is configured to protect a USB plug of the USB device. Additionally, the cap includes a link configured to provide a physical connection between the cap and a body of the USB device and an electrical connection between the antenna and a wireless connection system included within the body.

Abstract: A dielectrically loaded quadrifilar helical antenna has four quarter turn helical elements centred on a common axis. Each helical element is metallised on the outer cylindrical surface of a solid dielectric core and each has a feed end and a linked end, the linked ends being connected together by a linking conductor encircling the core. At an operating frequency of the antenna the helical elements and the linking conductor together form two conductive loops each having an electrical length in the region of (2n?1)/2 times the wavelength, where n is an integer. Such an antenna tends to present a source impedance of at least 500 ohms to receiver circuitry to which it is connected. The invention includes an antenna assembly including a dielectrically antenna and a receiver having a radio frequency front-end stage with a differential input coupled to the feed ends of the helical elements.

Abstract: The present invention provides a digital television receiving antenna for a plug-and-play device. The digital television receiving antenna includes a first conducting portion; and a second conducting portion, coupled to the first conducting portion and having a resonance path, wherein the second conducting portion is position-adjustable relatively to the first conducting portion, and an effective length of the resonance path is greater than a straight-line distance between two end points of the resonance path.

Abstract: The present invention provides a system supporting multiple monitors, comprising a computer, a cable for PG-Express data transporting, a PCI-Express graphics processing unit and its memory, and a monitor.

Abstract: A multi-layer display device having a first display screen having a first resolution and adapted to present a first visual image thereon, a second display screen having a second resolution and adapted to present a second visual image thereon, and a logic device configured to communicate with the first display screen and the second display screen and configured to receive a combined single plane visual image for display on the first and second display screen, the combined visual image having a first portion corresponding to the first visual image to be displayed on the first display screen and a second portion corresponding to the second visual image to be displayed on the second display screen, wherein the logic device is configured to transmit the first visual image to the first display screen and the second visual image to the second display screen.

Abstract: A scanning system device has a predetermined aberration as it scans or switches light along selected optical paths. A deformable membrane receives the light and introduces an inverse “aberration” that offsets that of the scanning system. In one embodiment the scanning system includes a torsion arm that supports an oscillatory body. The torsion arm and/or body can be machined from metal, micromachined in silicon or formed in a variety of other ways. Alternatively, the scanning system may include a rotating polygonal scanner or other type of optical scanner. In another approach, an optical switch replaces the scanner.

Abstract: An image signal readout method for reading out an image signal from an image detector including multitudes of pixels, each having a TFT switch, disposed two-dimensionally, in which a leak level flowing out to each of the data lines are detected with a signal for switching OFF the TFT switches being applied to each of the scanning lines prior to reading out the image signal.

Abstract: A plasma display device includes a PDP module having a plasma display panel (PDP), a drive circuit applying positive and negative sustain pulses having the same absolute value to the PDP, and a voltage detection circuit detecting voltage from the power supply module, and a power supply module having voltage output terminals connected to voltage input terminals of the PDP module through connection means, generating a positive voltage required to produce positive sustain pulses and a negative voltage required to produce negative sustain pulses from an AC supply voltage, both pulses being supplied to the PDP module, outputting both voltages from the voltage output terminals, and performing a feedback control for the output voltage based on a detection result from the voltage detection circuit, thereby effectively generating the positive and negative voltages required to produce the positive and negative sustain pulses without complex circuit configuration.

Abstract: A plasma display including a PDP and a driving method. High PDP temperatures and high load ratios impair the sustain discharge operation by creating uncontrollable charges that create a weak discharge during the address period. Subfields are rearranged to place a subfield having a weight lower than a reference weight between subfields having weights greater than the reference weight when the temperature of the PDP exceeds a reference temperature. The load ratio of at least one subfield is detected from an input video signal of one frame, and the subfields are rearranged when either the detected temperature is greater than the reference temperature or the detected load ratio is greater than a reference load ratio, or both. Uncontrollable charges are hence maintained below a threshold level and the weak discharge is reduced.

Abstract: A temperature of the plasma display panel is detected by a temperature sensor. An apparatus includes a display panel, a plate disposed adjacent to a rear surface of the panel, and a board disposed substantially parallel to the plate. A temperature sensor is formed on the board, and the temperature sensor is disposed between the plate and the board.

Abstract: A driving method and a driver circuit for improving the definition of display image on a plasma display device. In an initial state in an addressing discharge period, a scanning electrode is applied with a scanning base pulse at a first power supply potential. This suppresses a weak erroneous discharge between a scanning base pulse and a display data pulse. Next, the scanning electrode is applied with a scanning pulse. After the scanning pulse has been applied, the scanning electrode is applied with the scanning base pulse at a second power supply potential. In this way, the level of the scanning base pulse applied to the scanning electrode after the end of the application of the scanning pulse in the addressing discharge period is lower than the level of the scanning base pulse applied to the scanning electrode before the application of the scanning pulse.

Abstract: A novel PDP device capable of reducing the peak current of a sustain discharge without the need to modify circuits has been disclosed.

Abstract: The present invention relates to a plasma display device and a driving method thereof. A second voltage higher than a first voltage is applied to second electrodes while the first voltage is applied to first electrodes during at least a portion of a wall charge compensation period occurring between a first period and a second period of an address period. A difference between the first voltage and the second voltage is smaller than that between voltages applied to the first and second electrodes in a sustain period. Further, only when temperature of the plasma display device is higher than a reference temperature, the wall charge compensation period is included. Accordingly, the wall charges lost due to high temperatures may be compensated and a stable address operation can be performed.

Abstract: The pixel addressing circuit comprises two actuating transistors connected in series with a same diode to the terminals of a supply voltage, and two switching transistors each comprising a gate and respectively connected between data signals and the gate of the associated actuating transistors. The gates of the switching transistors are connected to two distinct outputs of a control circuit supplying them with different addressing voltages. The method for controlling the addressing circuit consists in applying addressing voltages to the gates of the switching transistors, which voltages are able to respectively turn the associated actuating transistors off and on so as to make one of the actuating transistors switch to an addressing and control phase of the diode and to make the other actuating transistor switch to a repair phase.

Abstract: A flexible metal foil substrate organic light emitting diode (OLED) display and a method for forming the same are provided. The method comprises: supplying a metal foil substrate such as titanium (Ti), Inconel alloy, or Kovar, having a thickness in the range of 10 to 500 microns; planarizing the metal foil substrate surface; depositing an electrical isolation layer having a thickness in the range of 0.5 to 2 microns overlying the planarized metal foil substrate surface; depositing amorphous silicon having a thickness in the range of 25 to 150 nanometers (nm) overlying the electrical insulation layer; from the amorphous silicon, forming polycrystalline silicon overlying the electrical insulation layer; forming thin-film transistors (TFTs) in the polycrystalline silicon; and, forming an electronic circuit using the TFTs, such as an OLED display.